Contain with bioremediation of oil spill and its Uses

1. BIOREMEDIATIONS OF
OIL SPILLS
PRESENTATION DATE : 16.12.2021
PRESENTED BY,
SUBHASIS DAS, SEM-5th
MICROBIOLOGY DEPARTMENT
BANKURA SAMMILANI COLLEGE

2. CONTENT  OIL SPILLS
 METHODS
 BIOREMEDIATION
 PRINCIPLE OF BIOREMEDIATION
 ENHANCEMENT OF BIOREMEDIATION
 ADVANTAGES
 DISADVANTAGES

3. An oil spill is the release of a liquid petroleum hydrocarbon into the environment
especially marine areas due to human activity and is the form of pollution. Oil spill may be
due to release of crude oil, off shore platforms, drilling rigs and well as spill of refined
petroleum.
• Oil spills occurs frequently throughout the world. There are both inland and oceanic
spills.
• Oil spills require quick action so that they cause as little danger as possible because
cleanup of oil spills is difficult and depends upon many factors. It may takes weeks,
months even years.
According to the Environmental Protection Agency, “ Oil releases threaten public health
and safety by contaminating drinking water, causing fire and explosion hazards,
diminishing air and water quality, compromising agriculture, destroying recreational areas
wasting nonrenewable resources, and costing the economy millions of dollars,” (2006).
OIL SPILLS

4. HISTORY OF BIGGEST OIL SPILLS
 TORREY CANYON (1967)
 THE AMOCO CADIZ OIL SPILLS
(1978)
 THE INCIDENT NOWRUZ OIL FIELD
(1983)
 GULF WAR OIL SPILLS (1991)
 ABT SUMMER OIL SPILLS (1991)

5. M
E
T
H
O
D
The method chosen to clean up an oil spill are determined
based upon the type of oil spilled, the location and its proximity
to sensitive environment and other environment factors.
There are mainly four method :
 Mechanical method : Booms, Skimmers, truck vacuums.
 Chemical method : Dispersants, surface washing agent,
surface collecting agent.
 Biological method : Use microbiological cultures, enzyme
additives, nutrient additives to increase the rate of
biodegradation of the contaminants.
 Natural method : Another course of action , simply allow the
areas to recover naturally and is cheaper than any other
method.

6. BIOREMEDIATION
Bioremediation refers to the process by which microorganisms are stimulated to
rapidly degrade hazardous contaminants to environmentally safe level in soil,
water sediments and air.
‘Bio’ means biological and ‘Remediate’ means to solve a problem so
“Bioremediate’’ means use biological oraganisms to solve environmental
problem such as contaminated soil, water, or air.
Bioremediation is a waste management technique that involves the use of
organisms to remove or neutralize pollutants from a contaminated site.
According to “EPA” , Bioremediation is a treatment that uses naturally occurring
organisms to break down hazardous subtances into less toxic or non toxic
subtances.

7. No human
interference
Monitoring
Nutrients
added
Indigenous
flora
Exogenous
flora
GMO
PROCESS OF
BIOREMEDIATION
Biostimulation
Natural
attenuation
Bioaugmentation

8.  Addition of oxygen
 Nutrient addition. (Bio stimulation)
 Using alternative electron acceptor
 Addition of surfactants
 Addition of microorganism. (bio augmentation)
Enhancement of
Bioremediation

9. Less Expensive
Natural Process
Not disruptive to
surrounding ecosystems
Does not require moving oil
to another location
Continues to improve
conditions
ADVANTAGES DISADVANTAGES
Bio augmentation not very
effective
Success depends upon
proper nutrients and
environmental condition
Takes time to evaluate site
Takes time to see results

10. CONCLUSION
A practical bioremediation strategy has not been
developed for the treatment of spills in the open
ocean. However, operational limitations exist for
all oil spill countermeasures. In the context of
shoreline clean up, bioremediation should be
considered a useful addition to our toolbox of oil
spill treatment strategies, including the option of
no treatment.

11. THANK
YOU